Need Help Getting Orbit Info

I haven't been able to get IGS orbits from the Internet Download link in TBC or the Orbital Data link on NGS' web site for several days now. The last time I tried I assumed they were down temporarily but it still isn't working today.

I generally grab the IGS Ephemeris from the NGS CORS site.

I just grabbed this Ultra Rapid for yesterday, and it look Okay to me:

#cP2017 10 25 18  0  0.00000000     192 ORBIT IGS14 HLM  IGS
## 1972 324000.00000000   900.00000000 58051 0.7500000000000
+   31   G01G02G03G05G06G07G08G09G10G11G12G13G14G15G16G17G18
+        G19G20G21G22G23G24G25G26G27G28G29G30G31G32  0  0  0
+          0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0
+          0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0
+          0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0
++         3  3  3  3  3  5  3  3  4  3  4  4  4  4  3  4  4
++         4  4  4  4  4  4  4  3  4  3  3  3  3  3  0  0  0
++         0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0
++         0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0
++         0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0
%c G  cc GPS ccc cccc cccc cccc cccc ccccc ccccc ccccc ccccc
%c cc cc ccc ccc cccc cccc cccc cccc ccccc ccccc ccccc ccccc
%f  1.2500000  1.025000000  0.00000000000  0.000000000000000
%f  0.0000000  0.000000000  0.00000000000  0.000000000000000
%i    0    0    0    0      0      0      0      0         0
%i    0    0    0    0      0      0      0      0         0
/* ULTRA ORBIT COMBINATION 19724_18 (58052.750) FROM:      
/* cou emu esu gfu ngu siu usu whu                        
/* REFERENCED TO emu CLOCK AND TO WEIGHTED MEAN POLE:      
/* PCV:IGS14_1972 OL/AL:FES2004  NONE     Y  ORB:CMB CLK:CMB
*  2017 10 25 18  0  0.00000000

Loyal

Loyal, post: 452740, member: 228 wrote: I generally grab the IGS Ephemeris from the NGS CORS site.

I just grabbed this Ultra Rapid for yesterday, and it look Okay to me:

Loyal

Thanks, that must be a different link.

Lee D, post: 452742, member: 7971 wrote: Thanks, that must be a different link.

Lee,

I use UFCORS:
I just select a CORS (any CORS, it doesn't matter), and "request" 24 hrs of data (duration might not matter either), and click on "IGS Ordits," and the sp3 file is included in the .zip file.

Loyal

Lee,

I noticed the same thing using the "Internet Download" feature in Leica Geo Office a couple of weeks ago. I can download the observation and navigation files for a specific CORS station, BUT not the ephemeris data. I'm not sure why the ephemeris data is no longer provided.

In addition to Loyal's method, NASA has an ftp site where you can wend your way through the directories to download the igs*****sp3.z file(s) for a given day. If you don't need the CORS data it is another way of getting the ephemerides. Use the below link, select the directory with the correct GPS week, and flip through the files until you get to the ones that begin with igr (rapid) or igs (precise). The failed download in LGO does tell me which file(s) I need. I store them in the default LGO directory, unzip them and then import into LGO.

ftp://cddis.gsfc.nasa.gov/gnss/products/

On second thought, Loyal's way is simpler and faster.

https://www.ngs.noaa.gov/UFCORS/

Ephemeris data is the same for every CORS which is why the NGS is not concerned about including it with every CORS file.

Internet paths get changed over time but you cannot always update them in some software. My first look is at the JPL site, then I go to the NGS home page, because my older direct links do not always work. I pick through the choices for the day in question and in the middle of all the CORS are the igs, igr and igu orbits. I grab the one I want, unzip it and move on.

Paul in PA

I looked briefly at jpl.noaa.gov (which is mostly full of pictures and articles for the curious public) and couldn't find any drill-down to the ephemeris data. I thought there might be a change in the link.

Investigate these links, if you haven't. I don't know much about them.
https://gipsy-oasis.jpl.nasa.gov/
https://gipsy-oasis.jpl.nasa.gov/index.php?page=data

Thanks everyone.

Try NGA at: http://earth-info.nga.mil/GandG/sathtml/PEexe.html

Oops. They have updated their site and have a new page at: http://earth-info.nga.mil/GandG/update/index.php?action=home

Ephemerides are linked from bottom of this page.

BTW, The Ohio State University Geodesy program site has also been updated and includes a PDF of Advanced Physical Geodesy and info about ordering a more legible printed version. See: https://earthsciences.osu.edu/geodetic/resources

Trimble released a patch today that updates the IGS links.

FairleyWell, post: 453130, member: 12279 wrote: Trimble released a patch today that updates the IGS links.

Can you post the new links?

Bill93, post: 453134, member: 87 wrote: Can you post the new links?

Sorry, I meant to say that Trimble released a patch for TBC that updated the automatic links. When you chose "Internet download" choose from the "(updated)" links.
< https://cddis.nasa.gov/Data_and_Derived_Products/GNSS/orbit_products.html > Is where you are directed when you click on manual download.

Thank you every one for your help and suggestions.